content: /**
   * Copyright (c) 2016-present, RxJava Contributors.
   *
   * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in
   * compliance with the License. You may obtain a copy of the License at
   *
   * http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing, software distributed under the License is
   * distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See
   * the License for the specific language governing permissions and limitations under the License.
   */
  
  package io.reactivex.flowable.internal.operators;
  
  import static org.junit.Assert.assertFalse;
  
  import org.junit.Test;
  import org.reactivestreams.Subscriber;
  
  import io.reactivex.common.exceptions.*;
  import io.reactivex.common.functions.Function;
  import io.reactivex.common.internal.functions.Functions;
  import io.reactivex.flowable.Flowable;
  import io.reactivex.flowable.internal.subscriptions.BooleanSubscription;
  import io.reactivex.flowable.processors.UnicastProcessor;
  
  public class ParallelFromPublisherTest {
  
      @Test
      public void sourceOverflow() {
          new Flowable<Integer>() {
              @Override
              protected void subscribeActual(Subscriber<? super Integer> s) {
                  s.onSubscribe(new BooleanSubscription());
                  for (int i = 0; i < 10; i++) {
                      s.onNext(i);
                  }
              }
          }
          .parallel(1, 1)
          .sequential(1)
          .test(0)
          .assertFailure(MissingBackpressureException.class);
      }
  
      @Test
      public void fusedFilterBecomesEmpty() {
          Flowable.just(1)
          .filter(Functions.alwaysFalse())
          .parallel()
          .sequential()
          .test()
          .assertResult();
      }
  
      @Test
      public void syncFusedMapCrash() {
          Flowable.just(1)
          .map(new Function<Integer, Object>() {
              @Override
              public Object apply(Integer v) throws Exception {
                  throw new TestException();
              }
          })
          .parallel()
          .sequential()
          .test()
          .assertFailure(TestException.class);
      }
  
      @Test
      public void asyncFusedMapCrash() {
          UnicastProcessor<Integer> up = UnicastProcessor.create();
  
          up.onNext(1);
  
          up
          .map(new Function<Integer, Object>() {
              @Override
              public Object apply(Integer v) throws Exception {
                  throw new TestException();
              }
          })
          .parallel()
          .sequential()
          .test()
          .assertFailure(TestException.class);
  
          assertFalse(up.hasSubscribers());
      }
  }
  